Fixed #18022 -- Fixed import of standalone Python 'json' module.

Thanks Clueless for the report and initial patch.

Refs #17071, r17018.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17865 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/utils/simplejson/__init__.py

@@ -129,7 +129,8 @@ if not use_system_version:
 
         use_system_version = True
         # Make sure we copy over the version. See #17071
-        __version__ = json.__version__
+        from json import __version__ as json_version
+        __version__ = json_version
     except (ImportError, NameError):
         pass